Plants for the edges of the flowerbed

I wonder if anyone can recommend some flowers/plants that I can edge my border with.

I have just made two flower beds with heaped soil. I have penstemons, a couple of fuschias, some white delphiniums, ornamental thistles and some lupins already in. I am trying to plan the beds so everything is visible. The problem that I have is that I have some aubritia which I have planted in one clump, but I do not know what to put around the edge of the beds for low interest. I have sewn some 'meringue' poached egg flowers which are a cream colour, but what else could I put in?

Ideally perennial, but annuals are fine, from seed or otherwise, I'll consider anything.

Any suggestions considered!!! (Not bright yellows or orange!)

 

Two of my personal favourites I'd recommend - firstly is the Poached Egg plant, an annual technically but a very good self seeder, may want to be mindful of that! Looks really cool and the Bees love it. The other is Tagetes, its flowers last pretty much all summer, it's a dazzling orange which looks stunning if you have a whole bank of it.

 

dianthus, the small ones flower all summer and are looking good for this year.

 

Cheap and cheerful as bedding is begonia semperflorens.
I wouldn't try to grow it from seed as it's really fikey and slow, but very cheap to buy as bedding.
It can't go out until after the last frosts but after that it will flower non stop until the first frosts with no attention whatsoever. It will perform well whatever the weather. Good in pots too.

 

Why not good old Lobelia????? with some mixed vars it can make a nice informal edging.

 

what about the humble but very pretty forget me not,
or sweet white alyssum, campanula carpatica 6-10 ins with it's bell shaped flowers in blue or white, dianthus, snow in summer, cottage pinks or iberis sempervirens, the perennial candytuft

 

Thanks everyone for your suggestions. I went to the nursery this morning and bought a tray full of white lobelia seedlings for £4 - bargain.

I asked for dwarf dianthus but alas they had none left. Very happy though, would not have thought of lobelia and I think it will really do me proud with it's self care attitude!

 

I have edged some of my borders with Campanula poscharskyana. Its perennial and forms small mounds. It has a very long flowering season of small blue flowers.

 

And if you trim it back after flowering, it flowers again later in the year. I was given a few straggly bits from a friend's garden two years ago and have it everywhere now.

 

Keep an eye on it because C. poscharskyana's terribly invasive.

 

Hi Tiarella

As I wrote the post above. I Googled and saw for the first time that people were saying it was invasive. I have always found it delightful and well behaved. If you divide one plant, each part will grow until it makes a mound the same size as the mother plant - and then it stops growing and remains at the size. It will self sow a bit but no more so than many other plants. But like so many invasive plants it all depends on how much it likes your conditions.